I use a Garmin Etrex 30 for outdoor navigation and Geocaching. Amazingly detailed maps can be downloaded as compatible Garmin images on this Openstreetmap website.
I have found the USB connection of the Etrex 30 to be a bit shaky. The Garmin image files can be quite large (~Gigabytes). Copying the files can take some time and it also gets stuck occasionally. If a corrupt Garmin image is written to the device, it will not be recognized on it.
A simple way to alleviate this problem is by using rsync for the synchronization. It will still take quite some time, but rsync makes sure that the images are copied correctly. Here is an example how to use rsync:
rsync --progress gmapsupp_germany.img /media/path_to_my/GARMIN_micro_sd/Garmin/
This blog is supposed to be a collection of random, unrelated, little ideas, thoughts, and discoveries, which I assume to be helpful to a negligible part of the world's population and wish to share out of pure altruism. If posts appear really weird, maybe you have the wrong kind of humor. Many of the posts are science/technology related. If you are opposed to that, stop reading here! Comments, criticism, corrections, amendments, questions are always welcome.
